List I | List II | ||
A. | Chitin | I. | Polymer of fructose |
B. | Lecithin | II. | Protein |
C. | Collagen | III. | Polysaccharide |
D. | Inulin | IV. | Phospholipid |
(a) | Acetic acid is a precursor of a derived lipid called cholesterol. |
(b) | Lecithin is a phospholipid found in the cell membrane. |
(c) | Glycerol is trihydroxy propane, considered an alcohol but not a lipid. |
(d) | Palmitic acid has 16 carbons excluding carboxyl carbon. |
(e) | Arachidonic acid is a saturated fatty acid which has 19 carbons excluding carboxyl carbon. |
a. | Trihydroxy propane is an example of a simple lipid. |
b. | Fatty acids with one or more C = C double bonds are said to be saturated. |
c. | Palmitic acid has 16 carbons excluding the carboxyl carbon. |
d. | Lecithin is an example of a phospholipid. |
The number of correct statements amongst the given statements is:
I. Amino acids are substitute methanes.
II. The R group in serine is hydroxyl-methyl.
III. Arachidonic acid has 20 carbon atoms including the carboxyl carbon.
IV. Glycerol is trihydroxypropane.
V. Lecithin is a phospholipid.
1. 2
2. 3
3. 4
4. 5
(a) | Lipids are generally water soluble. |
(b) | Dietary proteins are the source of essential amino acids. |
(c) | Paper made from plant pulp and cotton fibre is cellulosic in nature. |
(d) | In a nucleic acid, the bond between the phosphate and hydroxyl group of sugar is an ester bond. |
1. | One | 2. | Two |
3. | Three | 4. | Four |
Read the following statements on lipids and find out correct set of statements:
a: | Lecithin found in the plasma membrane is a glycolipid. |
b: | Saturated fatty acids possess one or more c=c bonds. |
c: | Gingely oil has lower melting point, hence remains as oil in winter. |
d: | Lipids are generally insoluble in water but soluble in some organic solvents. |
e: | When fatty acid is esterified with glycerol, monoglycerides are formed. |
Choose the correct answer from the options given below:
1. (a), (b) and (d) only
2. (a), (b) and (c) only
3. (a), (d) and (e) only
4. (c), (d) and (e) only
Arachidonic acid, Palmitic acid, Oleic acid, Stearic acid, Linoleic acid, Linolenic acid |